The communication server, which also controls all components of the “IP Distributed Architecture“. The rich volume of call processing features is thus also available to the “IP Distributed Architecture“.

This IP gateway module allows payload connections between subscriber line/CO and tie trunk circuits in the central part of the OpenScape 4000 system and subscriber/CO and tie trunk circuits in the distributed access points.

There are three types of IP based access points

This traditional Flexpack shelf with IP integration offers 16 slots for OpenScape 4000 peripheral modules

19“ shelf (3 units high), which can be mounted in a 19“ rack, allows inexpensive configurations for small locations. As a basic box, it offers 3 slots for OpenScape 4000 peripheral modules. The number of slots can be increased to 7 with an AP 3505 IP expansion box (3 units high). Both the AP 3500 IP and the AP 3505 IP expansion box can be equipped with a redundant power supply.

Both types of access point are equipped with a HG 3575 connection module, which establishes the connection to the IP infrastructure (10/100BT).

The IP-based access points allow the use of the majority of current and future modules which can be operated in classic OpenScape 4000 shelves.

The OpenScape 4000 SoftGate provides cost-effective branch offices with reliable OpenScape 4000 survivability options and an easy IT integration in the OpenScape 4000 solution and management suite. This software application offers full HiPath Feature Access (HFA) for IP Endpoints, SIP Service Provider connectivity and native SIP connectivity for trunking and subscriber with basic feature set based upon a standard server.

Any OpenScape 4000 SoftGate site integrates seamless in the communication system and network like an IPDA Access Point (AP 3700 IP) - in terms of features and administration.

OpenScape Enterprise Gateway is based on hardware and software of OpenScape 4000. It is successor of AP 3700-9 shelves with HG3575. The whole feature content of IP Distributed Architecture (IPDA) is available. For further information, please see OpenScape 4000 V8, Enterprise Gateway, Service Documentation.

Enterprise GW deployment installed with optional APE (Survivable Enterprise GW)

19“ shelf (10 units high), which can be mounted in a 19“ rack, features nine slots for OpenScape 4000 peripheral boards. The frame comes with three PSU modules which are operated in a 2+1 redundancy configuration.

The LTUCR (Line Trunk Unit Control Replacement) board is the interface between central and peripheral parts of the system. The LTUCR selects the signals from the active control unit and distributes them to the appropriate boards in the LTU shelf. The LTUCR also receives signals from the peripheral boards and transmits them to the common control.